Domanda del libro di testo
Two 25.0-mL samples, one 0.100 M HCl and the other 0.100 M HF, are titrated with 0.200 M KOH. c. Which titration curve has the lower initial pH?
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Ch.18 - Aqueous Ionic Equilibrium
Tro5th EditionChemistry: A Molecular ApproachISBN: 9780134874371
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TOC.tableOfContents
- Ch.1 - Matter, Measurement & Problem Solving117
- Ch.2 - Atoms & Elements106
- Ch.3 - Molecules and Compounds128
- Ch.4 - Chemical Reactions and Chemical Quantities56
- Ch.5 - Introduction to Solutions and Aqueous Solutions84
- Ch.6 - Gases112
- Ch.7 - Thermochemistry96
- Ch.8 - The Quantum-Mechanical Model of the Atom60
- Ch.9 - Periodic Properties of the Elements86
- Ch.10 - Chemical Bonding I: The Lewis Model91
- Ch.11 - Chemical Bonding II: Molecular Shapes, VSEPR & MO Theory85
- Ch.12 - Liquids, Solids & Intermolecular Forces51
- Ch.13 - Solids & Modern Materials48
- Ch.14 - Solutions93
- Ch.15 - Chemical Kinetics114
- Ch.16 - Chemical Equilibrium68
- Ch.17 - Acids and Bases137
- Ch.18 - Aqueous Ionic Equilibrium154
- Ch.19 - Free Energy & Thermodynamics91
- Ch.20 - Electrochemistry105
- Ch.21 - Radioactivity & Nuclear Chemistry74
- Ch.22 - Organic Chemistry141
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Capitolo 18, Problema 63a
Two 20.0-mL samples, one 0.200 M KOH and the other 0.200 M CH3NH2, are titrated with 0.100 M HI. a. What is the volume of added acid at the equivalence point for each titration?
Guida verificata passo dopo passo1
Identify the reaction for each titration: KOH with HI and CH_3NH_2 with HI.
For KOH, the reaction is: KOH + HI \(\rightarrow\) KI + H_2O. Calculate moles of KOH: \(\text{moles}\) = 0.200 \(\text{ M}\) \(\times\) 0.0200 \(\text{ L}\).
For CH_3NH_2, the reaction is: CH_3NH_2 + HI \(\rightarrow\) CH_3NH_3^+I^-. Calculate moles of CH_3NH_2: \(\text{moles}\) = 0.200 \(\text{ M}\) \(\times\) 0.0200 \(\text{ L}\).
Determine the volume of 0.100 M HI needed to react with the moles of KOH: \(\text{Volume}\) = \(\frac{\text{moles of KOH}\)}{0.100 \(\text{ M}\)}.
Determine the volume of 0.100 M HI needed to react with the moles of CH_3NH_2: \(\text{Volume}\) = \(\frac{\text{moles of CH_3NH_2}\)}{0.100 \(\text{ M}\)}.
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Titration
Titration is a quantitative analytical technique used to determine the concentration of a solute in a solution. It involves the gradual addition of a titrant (a solution of known concentration) to a sample until a reaction reaches its equivalence point, where the amount of titrant equals the amount of substance in the sample. Understanding the stoichiometry of the reaction is crucial for calculating the volume of titrant needed.
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Percorso guidato
03:04
Acid-Base Titration
Equivalence Point
The equivalence point in a titration is the stage at which the amount of titrant added is stoichiometrically equivalent to the amount of substance present in the sample. At this point, the reaction between the titrant and the analyte is complete, and it is often indicated by a color change in the solution if an indicator is used. Knowing the concentrations and volumes of the reactants allows for the calculation of the volume of titrant required to reach this point.
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Percorso guidato
01:07At the Equivalence Point
Stoichiometry
Stoichiometry is the calculation of reactants and products in chemical reactions based on the balanced chemical equation. It allows chemists to predict the amounts of substances consumed and produced in a reaction. In the context of titration, stoichiometry is essential for determining the volume of acid needed to neutralize a base, as it relates the molarity and volume of the solutions involved.
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Percorso guidato
01:16Stoichiometry Concept
Pratica correlata
Domanda del libro di testo
Two 20.0-mL samples, one 0.200 M KOH and the other 0.200 M CH3NH2, are titrated with 0.100 M HI. b. Is the pH at the equivalence point for each titration acidic, basic, or neutral?
413
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Domanda del libro di testo
Two 20.0-mL samples, one 0.200 M KOH and the other 0.200 M CH3NH2, are titrated with 0.100 M HI. d. Sketch each titration curve.
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Domanda del libro di testo
Two 25.0-mL samples, one 0.100 M HCl and the other 0.100 M HF, are titrated with 0.200 M KOH. b. Is the pH at the equivalence point for each titration acidic, basic, or neutral?
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Domanda del libro di testo
Two 25.0-mL samples, one 0.100 M HCl and the other 0.100 M HF, are titrated with 0.200 M KOH.
d. Sketch each titration curve.
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Domanda del libro di testo
Two 20.0-mL samples, one 0.200 M KOH and the other 0.200 M CH3NH2, are titrated with 0.100 M HI. c. Which titration curve has the lower initial pH?
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